Which of the following statements about the cytoskeleton is incorrect? A. The dynamic aspect of cytoskeletal function is made possible by the assembly and disassembly of a few simple types of proteins into large aggregates. B. Microfilaments are structurally rigid and resist compression, while microtubules resist tension (stretching). C. Movement of cilia and flagella is the result of motor proteins causing microtubules to move relative to each other D. Transport vesicles among the membranes of the endomembrane system depend on the function of the cytoskeleton.

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All the options given above are correct.

Microfilaments are the thinnest filament of the exoskeleton and they are found in the cytoplasm of eurkaryotic cells. The polymers that made up the microfilament are flexible and strong and they provide support for the cell.

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The incorrect statement is C. Movement of cilia and flagella is the result of motor proteins causing microtubules to move relative to each other

  • The cytoskeleton of the cell is a dynamic network of protein filaments that extends from the cell nucleus to the cell membrane.

  • The cytoskeleton is responsible for cell movement, cell division, movement of organelles and vesicles in the cytoplasm, provides shape and support to the cell, etc.

  • The cytoskeleton is composed of three types of protein filaments:  microtubules, actin filaments, and intermediate filaments.  

  • Microtubules are dynamic filaments that assemble to form cilia and flagella. The movement of cilia and flagella is driven by dynein motor proteins that hydrolyze ATP, causing microtubules to move relative to each other.

In conclusion, all statements above are correct except C. Movement of cilia and flagella is the result of motor proteins causing microtubules to move relative to each other.

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